Traders work on the floor of the New York Stock Exchange. US banking giant JPMorgan Chase says it has lost $2 billion on derivatives since March in what chief executive Jamie Dimon calls a "flawed" and "poorly executed" hedging operation

Traders work on the floor of the New York Stock Exchange. US banking giant JPMorgan Chase says it has lost $2 billion on derivatives since March in what chief executive Jamie Dimon calls a "flawed" and "poorly executed" hedging operation